The universe might be teeming with microscopic black holes the size of an atom but with the mass of a city-sized asteroid, scientists say.

For years, astronomers have been hunting for Planet Nine, a hypothetical giant planet believed to be lurking at the far ...

This gas cloud located 500 light years away from our solar system is about to become a planet.This process usually takes a ...

Primordial black holes, which are smaller than their better-known cousins, visit the inner Solar System once a decade, ...

"Primordial black holes do not live in the solar system. Rather, they're streaming through the universe, doing their own thing," said researcher Sarah Geller.

Snapchat Friend Solar System is a premium feature that lets you visualize your closest friends as planets that revolve around ...

This video explores the key characteristics of each planet within our solar system. Suitable for teaching science at KS1 and ...

kids grew up learning that the solar system has nine planets. That all changed in the late 1990s when astronomers started arguing about whether Pluto was indeed a planet. In a highly controversial ...

Now, however, Pluto and that part of the solar system has moved away from the backdrop of the Milky Way into a sparser region of the night sky. With its Hyper Suprime-Cam (HSC), Subaru has discovered ...

According to a new study, if a primordial black hole passed within a few hundred million miles of Mars, it could shift the planet's orbit by about a meter -- causing a "wobble." ...

A passing star may have kicked the weird moons of giant planets like Jupiter and Saturn into place, new research suggests.